douyun1972 2017-06-27 20:06
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按PHP中的值对多维关联数组进行排序

I have this set of array:

Array(
    [day_1] => Array(
        [3744] => Array(
            [time_start] => 11:00
            [time_end] => 12:00
            [notes] => 
        )
        [3746] => Array(
            [time_start] => 08:00
            [time_end] => 11:00
            [notes] => 
        )
        [532] => Array(
            [time_start] => 09:00
            [time_end] => 11:30
            [notes] => 
        )
    )
    [day_2] => Array(
        [3747] => Array(
            [time_start] => 08:00
            [time_end] => 10:00
            [notes] => 
        )
    )
)

How do I sort the array in "day_1" based on the value of "time_start"?

The end result that I want to achieve is:

Array(
    [day_1] => Array(
        [3746] => Array(
            [time_start] => 08:00
            [time_end] => 11:00
            [notes] => 
        )
        [532] => Array(
            [time_start] => 09:00
            [time_end] => 11:30
            [notes] => 
        )
        [3744] => Array(
            [time_start] => 11:00
            [time_end] => 12:00
            [notes] => 
        )
    )
    [day_2] => Array(
        [3747] => Array(
            [time_start] => 08:00
            [time_end] => 10:00
            [notes] => 
        )
    )
)

I have tried:

foreach($array['day_1'] as $key => $value){
    $starttime[$key] = strtotime($value['time_start']);
}
array_multisort($starttime, SORT_ASC, $array['day_1']);

But its not sorted and it removes my array key as well.

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1条回答 默认 最新

  • doukuanyong1939 2017-06-27 20:21
    关注

    The solution using uasort function:

    // $arr is your initial array
    uasort($arr['day_1'], function($a, $b){
        return strcmp($a['time_start'], $b['time_start']);
    });
    
    print_r($arr);
    

    Demo link

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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